------------[ cut here ]------------
workqueue: cannot queue hci_cmd_timeout on wq hci0
WARNING: kernel/workqueue.c:2270 at __queue_work+0xcbb/0x10f0 kernel/workqueue.c:2269, CPU#1: udevd/5171
Modules linked in:
CPU: 1 UID: 0 PID: 5171 Comm: udevd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__queue_work+0xcbf/0x10f0 kernel/workqueue.c:2269
Code: 00 00 00 fc ff df 49 8d 94 24 78 01 00 00 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 15 04 00 00 48 8d 3d d5 ad 0c 0f 48 8b 75 18 <67> 48 0f b9 3a e9 77 f7 ff ff e8 62 73 38 00 90 0f 0b 90 e9 ff f5
RSP: 0018:ffffc90000a08bf0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000100 RCX: 1ffff1100f7d6951
RDX: ffff888052549178 RSI: ffffffff8a74ecb0 RDI: ffffffff90db48a0
RBP: ffff88807beb4a70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000000 R12: ffff888052549000
R13: 1ffff9200014118f R14: ffffffff81ceabd0 R15: 0000000000000001
FS: 00007f14cbbaf880(0000) GS:ffff88812449d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000007000 CR3: 0000000027c7e000 CR4: 00000000003526f0
Call Trace:
call_timer_fn+0x19a/0x590 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1794 [inline]
__run_timers+0x570/0xac0 kernel/time/timer.c:2373
__run_timer_base kernel/time/timer.c:2385 [inline]
__run_timer_base kernel/time/timer.c:2377 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2394
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2404
handle_softirqs+0x1ea/0x910 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xef/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:finish_task_switch.isra.0+0x20e/0xb80 kernel/sched/core.c:5152
Code: 9a 03 0f 48 85 d2 0f 85 84 06 00 00 85 c0 0f 85 a7 01 00 00 48 89 df e8 20 e5 ff ff e8 9b 10 3a 00 fb 49 8d bc 24 20 16 00 00 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84
RSP: 0018:ffffc90003287858 EFLAGS: 00000202
RAX: 00000000009c2601 RBX: ffff8880b853af40 RCX: 0000000000000080
RDX: 0000000000000000 RSI: ffffffff8de617e9 RDI: ffff88807b66baa0
RBP: ffffc900032878a0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88807b66a480
R13: ffff88802e67a480 R14: ffff88802e67a480 R15: ffff8880b853bd70
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x102b/0x6000 kernel/sched/core.c:6907
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7234
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:qlink_free mm/kasan/quarantine.c:146 [inline]
RIP: 0010:qlist_free_all+0x25/0xe0 mm/kasan/quarantine.c:179
Code: 90 90 90 90 90 41 56 49 89 fe 41 55 49 89 f5 41 54 55 53 48 8b 1f 48 85 db 75 39 e9 b1 00 00 00 48 63 85 b8 00 00 00 4c 8b 23 <48> 89 ef 48 29 c3 48 89 de e8 7d ec ff ff 66 90 48 89 de 48 89 ef
RSP: 0018:ffffc90003287b10 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888086b47000 RCX: ffffea00021ad100
RDX: 0000000000000001 RSI: ffffffff81b8a808 RDI: ffff88807b66a480
RBP: ffff88813fe4c140 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807b6e2dc0
R13: 0000000000000000 R14: ffffc90003287b40 R15: 0000000000001000
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4459 [inline]
slab_alloc_node mm/slub.c:4788 [inline]
__do_kmalloc_node mm/slub.c:5176 [inline]
__kvmalloc_node_noprof+0x316/0xa00 mm/slub.c:6668
seq_buf_alloc fs/seq_file.c:38 [inline]
seq_read_iter+0x819/0x1270 fs/seq_file.c:210
kernfs_fop_read_iter+0x46c/0x610 fs/kernfs/file.c:297
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x825/0xb30 fs/read_write.c:574
ksys_read+0x12a/0x250 fs/read_write.c:717
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f14cb4a7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fff479f6f90 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f14cbbaf880 RCX: 00007f14cb4a7407
RDX: 0000000000001000 RSI: 00005563d87589c0 RDI: 000000000000000c
RBP: 00007f14cb5efff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a
R13: 00007f14cb5efea0 R14: 0000000000000000 R15: 00005563d87515c0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 fc add %bh,%ah
4: ff lcall (bad)
5: df 49 8d fisttps -0x73(%rcx)
8: 94 xchg %eax,%esp
9: 24 78 and $0x78,%al
b: 01 00 add %eax,(%rax)
d: 00 48 89 add %cl,-0x77(%rax)
10: f9 stc
11: 48 c1 e9 03 shr $0x3,%rcx
15: 80 3c 01 00 cmpb $0x0,(%rcx,%rax,1)
19: 0f 85 15 04 00 00 jne 0x434
1f: 48 8d 3d d5 ad 0c 0f lea 0xf0cadd5(%rip),%rdi # 0xf0cadfb
26: 48 8b 75 18 mov 0x18(%rbp),%rsi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: e9 77 f7 ff ff jmp 0xfffff7ab
34: e8 62 73 38 00 call 0x38739b
39: 90 nop
3a: 0f 0b ud2
3c: 90 nop
3d: e9 .byte 0xe9
3e: ff f5 push %rbp